US3926199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tobacco smoke filter
Assignee: Individual
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Filing: 1975-02-12
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Granted: 1975-12-16
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Expires: 1995-02-12
Abstract
Abstract An efficient filter for cigars and cigarettes results from a special smoke flow path and precooling structure. The flowpath extends through a cigar or cigarette holder. It proceeds through two restrictions in series. The smoke is made to change flow direction after the first restriction and is allowed to expand in limited degree. It is allowed to expand in greater degree and is made to flow with turbulence over a tar collection surface after passing the second restriction. The effect of that arrangement is to condense a large proportion of the tars and nicotine out of the smoke in a way that avoids significant altering of the flow path shape. The smoke is precooled by the introduction of ambient air which is mixed with the smoke upstream from the restrictions. The filtering efficiency is not much affected by the ratio of air to smoke so that the holder is useful in aiding smokers to withdraw from the smoking habit by the method of successively increasing the proportion ratio of air to smoke.
Inventors
- 👤 Leonard L Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:46
CPC Classifications
A; A24; A24F; A24F13/00; A24F13/02; A24F13/04
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
200 words
In a holder for a cylindrically shaped tobacco smokers'' product, the holder having an exit opening at one end and a recess for receiving the end of the tobacco product at its opposite end, the interior walls of which define a passageway for smoke from the recess to the exit opening, the improvement which comprises: a holder body having means defining a cylindrical cavity; smoke flow control means in the form of a generally cylindrically having an end face and member having an outer diameter less than the inner diameter of said body and having a region of its outer surface cut away intermediate its ends; said smoke flow control means being disposed axially within said cavity means for forming, with said body, means providing a substantially annular cavity extending around the inner periphery of said body, a portion the length of which has a greater cross-sectional area than the remainder thereof; and means for introducing smoke into said annular cavity comprising means providing a recess in said end face of said member and a smoke accelerating channel formed by the outer surface of said member and said body and extending from said recess means to said cut away region.
Claim 2
Dependent Claim
200 words
In a holder for a cylindrically shaped tobacco smokers'' product, the holder having an exit opening at one end and a recess for receiving the end of the tobacco product at its opposite end, the interior walls of which define a passageway for smoke from the recess to the exit opening, the improvement which comprises: a holder body having means defining a cylindrical cavity; smoke flow control means in the form of a generally cylindrically having an end face and member having an outer diameter less than the inner diameter of said body and having a region of its outer surface cut away intermediate its ends; said smoke flow control means being disposed axially within said cavity means for forming, with said body, means providing a substantially annular cavity extending around the inner periphery of said body, a portion the length of which has a greater cross-sectional area than the remainder thereof; and means for introducing smoke into said annular cavity comprising means providing a recess in said end face of said member and a smoke accelerating channel formed by the outer surface of said member and said body and extending from said recess means to said cut away region.
Claim 3
Dependent Claim
68 words
The invention defined in claim 1 which further comprises a barrier means for confining the flow of smoke to flow through said recess means which barrier means comprises a barrier extending across the interior of said body in abutment with said end face of said member, said barrier having means providing a smoke flow opening therethrough opening to said recess means at a point removed from said channel.
Claim 4
Dependent Claim
67 words
The invention defined in claim 2 which further comprises air control means for admitting ambient air into the interior of said body at a point upstream from said barrier, said air control means comprising a hollow air inlet element, opening At a point upstream from said flow opening means and adjacent to a line extending through said flow opening and parallel with the axis of said body.
Claim 5
Dependent Claim
38 words
The invention defined in claim 3 in which said flow opening means is located substantially on the central axis through said holder body, said air inlet element having an outlet opening at a point adjacent to said axis.
Claim 6
Dependent Claim
39 words
The invention defined in claim 2 in which said recess means is V-shaped and of substantially uniform depth, the recess means opening at its widest dimension at the side of said element at which said cut out is formed.
Claim 7
Dependent Claim
39 words
The invention defined in claim 4 in which said recess means is V-shaped and of substantially uniform depth, the recess means opening at its widest dimension at the side of said element at which said cut out is formed.
Claim 8
Dependent Claim
54 words
The invention defined in claim 2 in which said recess in the end of said element is circular, of substantially uniform depth, and concentric with the axis of said element; said channel being formed by means providing a slot in the exterior surface of said element interconnecting said recess and said cut away portion.
Claim 9
Dependent Claim
54 words
The invention defined in claim 4 in which said recess in the end of said element is circular, of substantially uniform depth, and concentric with the axis of said element; said channel being formed by means providing a slot in the exterior surface of said element interconnecting said recess and said cut away portion.
Claim 10
Dependent Claim
123 words
The invention defined in claim 3 in which said air control means comprises: a hollow cylindrical element having its axis concentric with the flow opening means through said barrier, having diameter less than the inner diameter of said body to form a second annular cavity with said body; said air control means further comprising means providing an air inlet opening formed through the wall of said cylindrical member for affording communication from said second annular cavity means to the flow path for smoke upstream from the flow opening means in said barrier; and means in the form of an opening in the wall of said holder body for admitting ambient air from the exterior of said body to said second annular cavity means.
Claim 11
Dependent Claim
123 words
The invention defined in claim 6 in which said air control means comprises: a hollow cylindrical element having its axis concentric with the flow opening means through said barrier, having diameter less than the inner diameter of said body to form a second annular cavity with said body; said air control means further comprising means providing an air inlet opening formed through the wall of said cylindrical member for affording communication from said second annular cavity means to the flow path for smoke upstream from the flow opening means in said barrier; and means in the form of an opening in the wall of said holder body for admitting ambient air from the exterior of said body to said second annular cavity means.
Claim 12
Dependent Claim
123 words
The invention defined in claim 8 in which said air control means comprises: a hollow cylindrical element having its axis concentric with the flow opening means through said barrier, having diameter less than the inner diameter of said body to form a second annular cavity with said body; said air control means further comprising means providing an air inlet opening formed through the wall of said cylindrical member for affording communication from said second annular cavity means to the flow path for smoke upstream from the flow opening means in said barrier, and means in the form of an opening in the wall of said holder body for admitting ambient air from the exterior of said body to said second annular cavity means.
Claim 13
Dependent Claim
53 words
The invention defined in claim 3 in which said means for admitting ambient air comprises an elongated nipple extending into the interior of said body at a point upstream from said barrier and flow opening means, said nipple terminating at a point adjacent the axis of said flow opening meaNs through said barrier.
Claim 14
Dependent Claim
53 words
The invention defined in claim 6 in which said means for admitting ambient air comprises an elongated nipple extending into the interior of said body at a point upstream from said barrier and flow opening means, said nipple terminating at a point adjacent the axis of said flow opening means through said barrier.
Claim 15
Dependent Claim
53 words
The invention defined in claim 8 in which said means for admitting ambient air comprises an elongated nipple extending into the interior of said body at a point upstream from said barrier and flow opening means, said nipple terminating at a point adjacent the axis of said flow opening means through said barrier.
Claim 16
Dependent Claim
14 words
The invention defined in claim 2 in which said barrier is formed of metal.
Claim 17
Dependent Claim
15 words
The invention defined in claim 13 in which said holder body is formed of metal.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-15 | 1979-06-16 | 1979-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-15 | 1983-06-16 | 1983-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-15 | 1987-06-16 | 1987-12-16 | $7700.00 | Window Closed / Lapsed |